Western Digital WD Black SN850X 4TB Gen4 NVMe SSD for PS5 – 7300MB/s 6600MB/s R/W 2400TBW 1200K/1100K IOPS 1.75M Hrs MTBF M.2 PCIe4.0 5yrs | WDS400T2X0E-00BCA0

Western Digital WD Black SN850X 4TB Gen4 NVMe SSD for PS5 – 7300MB/s 6600MB/s R/W 2400TBW 1200K/1100K IOPS 1.75M Hrs MTBF M.2 PCIe4.0 5yrs No Heatsink

The Ultimate X Factor

Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe™ SSD. Crush load times and slash throttling, lagging, and model pop-ins for a smooth, fast experience that lets you compete at your absolute peak. This purpose-built gaming drive comes in capacities of 1TB to 4TB1, with an optional heatsink on the 1TB and 2TB drives to help sustain top-end performance for more consistent gameplay. With the advanced features of Game Mode 2.0 (Windows® only) plus speeds that approach the limits of the PCIe® Gen43 interface, the WD_BLACK SN850X NVMe SSD delivers top-tier performance to keep you playing, streaming, recording, and dominating the game.

Get the Ultimate Gaming Edge
Soup Up Your Rig
More Room for More Games
Heatsink for the Win
Game Mode 2.0
Near-Max PCIe® Gen43 Speeds

Full Specifications
Capacity 4 TB
Form Factor M.2 2280
Interface PCIe Gen4 x4
Sequential Read Performance 7300MB/s
Sequential Write Performance 6600MB/s
Random Read 12000004KB IOPS
Random Write 11000004KB IOPS
Endurance (TBW) 2400
Compatibility
Computer with M.2 (M-key) port, capable of taking M.2 2280 form factor
Windows® 11, 10, 8.1
PlayStation® 5 (Heatsink model only)4

Product Last Updated: 11/12/2025

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